ClassWriter.COMPUTE_FRAMES & Stack size too large

Bhaskar Maddala <[email protected]>
Newsgroups gmane.comp.java.objectweb.asm
Message-ID <[email protected]>
Hello,

  I was playing around with ASM and as  a newbie cannot seem to figure
out what I am doing wrong in the following code

public class VarianceOnReturnTypeGenerator {
	public static void main(String[] args) throws Exception {
		Class<?> clazz = writeClass();
		Object o = clazz.newInstance();
	}

	private static Class<?> writeClass() {
		ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);

		cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, "OverriddenMethods", null,
				"java/lang/Object", null);
		writeConstructor(cw);
		cw.visitEnd();
		GeneratedClassLoader gcl = new GeneratedClassLoader();
		return gcl.defineClass("OverriddenMethods", cw.toByteArray());
	}

	private static void writeConstructor(ClassWriter cw) {
		MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null,
				null);
		mv.visitCode();
		mv.visitVarInsn(ALOAD, 0);
		mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
		mv.visitInsn(RETURN);
		mv.visitEnd();
	}
}

When attempting to create an instance of the object using newInstance,
I get the following exception

Exception in thread "main" java.lang.VerifyError: (class:
OverriddenMethods, method: <init> signature: ()V) Stack size too large
	at java.lang.Class.getDeclaredConstructors0(Native Method)

Pointers much appreciated.

Thanks
Bhaskar
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